<% unless @promotion.multi_codes? %>
  <%= f.spree_number_field :usage_limit, min: 0, step: 1, help: 'Leave this field blank for unlimited usage.' %>
<% end %>

<%= f.spree_datetime_field :starts_at %>

<%= f.spree_datetime_field :expires_at, help: 'Leave this field blank for no expiration.' %>
